Research On Spatial Transmission Mechanism Of Prefabricated Building Incentive Policy From The Perspective Of Complex Network

Fiscal and tax incentive policies issued by local governments play an important role in promoting the development of prefab buildings.However,from the point of view of local policies,prefab building policy documents issued in the eastern coastal region,southwest region and central region are earlier and more,while those issued in the northwest and northeast region are relatively later and less,showing significant policy conductivity in space.In this paper,based on the local government’s official website to collect the prefabricated building incentive policy,establish a prefabricated building incentive policy transmission-weighted complex network model and analyzes its features,using node and strength clear incentive policy transmission path,from incentive city hotspot policy elements,hot,hot direction transmission dynamics,this essay explores them from three perspective for local governments to build policies database in order to adjust measures to local conditions and implement the incentive measures are put forward to provide the reference and draw lessons from,the main conclusions are as follows:(1)From the perspective of spatial network characteristics of policies,incentive policies show regional differences,with one-third of cities not issuing prefab policy documents.In the eastern coastal region and the central region,all cities have issued relevant documents on prefab building incentive policies,while in the western and northeastern regions,only provincial and ministerial documents or provincial capital cities have issued relevant policies.The distribution curve of the nodes in the policy network has the characteristics of long tail and follows the power law distribution.Compared with the random network of the same size,the network accords with the characteristics of small world.(2)From the perspective of the spatial transmission path of policies,the evolution process of network structure finds that in the transmission process of prefab building incentive policies in China,they first appeared in the eastern coastal areas such as Jiangsu,Shanghai and Zhejiang,and then spread to surrounding areas,and then to the central,western and northern parts of China.From space-time conduction of incentive policy factor analysis found that the fiscal,taxation,land policy in three aspects: the reference rate is higher,and the administrative,financial and other policy reference rate is low,and in regional policies,northeast,Inner Mongolia,Shanxi,Guangxi and other places in such aspects as finance,administration and construction link more attention,show the area is introduced relevant policy documents but it failed to achieve true incentive effect.(3)From the perspective of the spatial transmission intensity of policies,the analysis from the perspective of hot policy elements found that the top key words in the network transmission intensity were tax and finance.The analysis from the perspective of hot-spot incentive city reveals that the provinces and cities in the core are mainly in the eastern coastal region,while the marginal cities are mainly in the west,northeast and north.From the perspective of hot policy direction,it is found that tax,finance,finance and land have a large edge weight between them,tax and finance have the largest transmission force,and administrative,construction and other three kinds of policies have a small edge weight between them.In addition,fiscal,tax,land and other aspects of the incentive policy,especially in the fiscal and tax incentives,land area,plot ratio and other aspects of the incentive policy transmission strength;Financial,administrative and other aspects do not mention specific indicators measures.